KeyedCollectionBase and dataGrids

[james@webamoeba]

Hi,

i found a nice little class on devcity called KeyedCollectionBase (http://www.devcity.net/Articles/66/1...llection.aspx). It claims to solve any problems with updating datagrids when using collections as the datasource.

But i can't seem to get it to work?????????

i bind the grid (dataGridTeams) to competition.teams (a TeamCollection Object, extends KeyedCollectionBase). Then tell the teamsCollection that it should be bound to the grid.

When I try to remove the last record in the datagrid it all goes belly up! And i get an index out of range error on the datagrid itself. It seems that for some reason the datagrid bindings aren't updating correctly, and I can't work out why. Any help would be great

' bind collection
            Me.dataGridTeams.DataSource = Me.competition.teams
            Me.competition.teams.BoundDataGrid(Me.dataGridTeams)
            ' add grid handler
            AddHandler Me.competition.teams.CountChange, AddressOf dataGrid_Update

Private Sub dataGrid_Update(ByVal Sender As Object, ByVal e As CountEventArgs)
        Me.dataGridTeams.DataSource = Nothing
        Me.dataGridTeams.DataSource = Me.competition.teams
    End Sub

Private Sub btnTeamRemove_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnTeamRemove.Click
        ' check item selected
        If Me.dataGridTeams.CurrentRowIndex > -1 Then
            Dim team As Team = Me.competition.teams.Item(Me.dataGridTeams.CurrentRowIndex)
            If MsgBox("Are you sure you want to delete team " + team.ToString, MsgBoxStyle.OKCancel, "Delete Team") = MsgBoxResult.OK Then
                ' remove team
                Me.competition.teams.Remove(team)
            End If
        End If
    End Sub